walker



June? 15 1926. J. P. WALKER 'HATCH FOR FLUID STORAGE TANKS Filed July 17 1925 glwoento'o Patented June 15,1926.

UNITED" STATES.

PATENT 'OFFlCE.

JAY r. WALKER, or oknanoma our, ox'nanoma, assrenon :ro mnnrcm 'rnnx COMPANY, OF OKLAHOMA CITY OKLAHOMA,

A CORPORATION 01 OKLAHOMA.

HATCH FOR FLUID-STORAGE TANKS.

This invention relates'to new and useful improvements in hatches for fluid storage tanks.

The invention has to do with hatches pro- 5 viding a convenient means for gaining access to the contents of the tank, whereby the latter may be gauged for quantity and a sample for quality taken.

The object of the invention is to provide an efiicient and easily and quickly operated fastening for the hatch cover. A further object is toprovide a seal so that unauthorized persons cannot open the hatch.

A further object ofthe invention is to provide means for supporting the cover in its open position.

A construction designed to carry out the invention will be hereinafter described togather with other features of the invention.

The invention will be more readily understood from a reading of the following specification and by reference to the accom .panying drawings, in which an example of the invention is shown, and wherein Fig. 1 is a side View partly in section and showing a hatch constructed in accordance with my invention,

Fig. 2 is a plan viewof the same,

Fig. 3 is a detail of the sealing means, and

Fig. 4. is a detail of the cam and bail connection.

In the drawings the numeral 10 desi nates a circular collar having an outwardly directed base flange 11 by which it is secured to the tank 12. At the back of the collar is cast a vertical and radial boss 13 extending upwardly from the flange. The boss terminates flush with the top or upper edge of thecollar and has a pair of spaced upstanding ears 14.

A circular flan ed extending radial upwardly. A lug 17 depends from the arm at its intersection with cover and is positioned between the ears 14. A hingepin 18 passes through the ears and the lug. The cover slightly overhangs the collar and has a marginal annular groove 19in its face, said groove being dove-tail in cross-section. A gasket 20 of' suitable elastic material is en the ange of the cover so as to rest upon cover 15 has an arm 16 and alterations ma y therefrom and curved ga ed in said groove and projects below" Application filed July 17, 1925. Serial Ro. 44,249.-

the collar. The cover has a depending central boss 21 depending within the upper end of the collar.

Trunnions 22-project radially from diametrlcally opposite side'sv of the collar and anarched bail 23 has its lower ends hinged on said trunnions. The top of the cover 15 is spherical and the bail swings over the same. At the center of the top of the bail is formed a yoke 24. A fastening cam 25 ef cam has its tip pivoted in said yoke on a trans- I tering with the ear 28. A seal loop 30 of the non-reusable type is'passed through the ears to seal the cover in its closed position.

For convenience the cars 28 and 29 may be placed to form stops to arrest the bail in its upright position, but this is not essential.

The arm 16 forms a handle or foot treadle which may be depressed to swing the cover to its open position and it constitutes a' stop when engaging the flange 11 to limit the upward swing of the cover and to hold the latter in its open position.

Various changes in the size and shape of the different parts, as well as vmodifications be made within the scope of the appen ed claims.

What Iclaim, is 1. In. a hatch of the charactei described, a collar for attachment to a storage receptacle, a cover pivoted on the collar, a sealing ear on the collar, an alined sealing ear on the cover registering with the ear on the collar, and a bail pivotedon the collar, the sealing ears being located to arrest the bail in an upright position. p

2. In a hatch of the character described, a collar for attachment toa storage tank, a cover pivoted on the collar, a sealing ear on. the collar, an alined sealing ear on the cover registering with the car on the collar, a bail pivoted on the collar, the sealing cars 'flange, a boss extending l0 boss,

being located to arrest the bail in an'upright position, and a cam fastening pivoted to the bail and engaging the cover.

3 In a hatch, a collar having a base vertically on-the pivoting ears at provided with a cooperating a radial arm extending from to engage the vertical face of the apertured sealing ears on the collar outside of the collar with its top, a. cover pivoting ear, the cover and cover disposed to aline when the cover is closed, a bail hinged on the collar and swinging over the cover to engage the sealing ears, a cam pivotally retained in a yoke at the apex of the bail and engaging the cover, and an operating lever for said cam.

In testimony whereof I affix my signature.

JAY P. WALKER. 

